debug mode symbols cleanup

[François Dumont]

On 07/09/2015 13:03, Jonathan Wakely wrote:
> On 05/09/15 22:53 +0200, François Dumont wrote:
>>    I remember Paolo saying once that we were not guarantiing any abi
>> compatibility for debug mode. I haven't found any section for
>> unversioned symbols in gnu.ver so I simply uncomment the global export.
>
> There is no section, because all exported symbols are versioned.
>
> It's OK if objects compiled with Debug Mode using one version of GCC
> don't link to objects compiled with Debug Mode using a different
> version of GCC, but you can't change the exported symbols in the DSO.
>
>
> Your changelog doesn't include the changes to config/abi/pre/gnu.ver,
> but those changes are not OK anyway, they fail the abi-check:
>
> FAIL: libstdc++-abi/abi_check
>
>                === libstdc++ Summary ===
>
> # of unexpected failures        1
>
>
Sorry, I though policy regarding debug mode symbols was even more relax.
It is not so here is another patch that doesn"t break abi checks.

I eventually made all methods that should not be used deprecated, they
were normally not used explicitely anyway. Their implementation is now
empty. I just needed to add a symbol for the not const _M_message method
which is the correct signature.

François

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